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    Hydralic engineer question: pump dynamics johnson/evinrude impellers

    OK I have a 3hp Johnson that has a 3 vane impeller the 4hp of the same year has a 6 vain impeller both use the same keeper and ride in the same size cup. what is there difference? volume verses pressure? I'm just curious. Thanks
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    J4RLCCS 1988 slim jim 4hp no water discharge

    Hi I have a Belgium made 4hp that runs fine and doesn't get hot. I can hold my fingers on the head for several second comfortably. It has no above line water pump witness. No tell tale or exhaust mist. There is a muffler where the normal spray would exit. Is this normal? Thanks....Robert
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    1990 3hp johsnon overheat

    I have a 1990 3hp Johnson that get too hot. I have change the impeller and still is running way too hot. Any thought on what to check next? Thanks. It sprays a little water then just stops and then heats up.
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    1980 johnson 4.5hp sync.

    I'm trying to synchronize the throttle and spark advance and I'm having trouble. I just reclaced the follower because it was cracked, so I installed a new one. I'm trying to get the butter fly to open by setting the wheel between the two hash marks, but I'm out of adjustment, the set screw is...
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    1996 mariner 5hp carb problem. I think.

    This has got me stumped. The motor would only run at full choke. Ok. dirty carburetor. I cleaned it thoroughly and then it ran at half choke. Ok, I missed something. Tear it down for a second time and very thoroughly and meticulously clean and very carefully by the manual reassembly it again...
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    Johnson 4.5hp J5RLCS not pumping water

    Hi guys, I just bought a 1980 (I think) 4.5hp johnson seahorse short-shaft. I runs good but doesn't pump water I see no tell tale and not much spray from the exhaust relief nozzle. The manual says the shift rod is one piece. Has anyone have any experience:redface: with these little engine that...
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    5hp mariner year of make?

    Hi, trying to find information on this motor is very hard. the serial number is: OD990014 and below that on the id plate is the number: 394 The faded out decals say 5hp. I'm trying to find out it's age and replacement decals. Seems hopeless. Thanks.....Robert
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    shift cable rigging on a johnson j8rleem

    Hi I'm trying to rig the shifter cable on my kicker 8hp. I bought the adapter kit parts, cable lever and rod and I have the other parts on hand. I cannot find where to mount the lever there is no boss unless I use the one common with the throttle lever. To complicate matters, on that year motor...
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    gas storage. Tank full or empty?

    Do I store my boat's gas tank full or empty for the winter, and how long will modern gas stay viable in the tank with added stabil? Thanks any advice would be appreciated. I have a 2010 smokercraft tracer and I'm trying to keep it up as much as possible........Robert
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    1990 johnson 3hp missing lower engine cover

    Hi I just acquired a nice little 3hp johnson 1990 is the year j3bresr is the model number. I just tune it up and it runs fine. The only problem with the motor is it is missing the lower engine cover (previous owner took it off and hauled it off to the dump by mistake) I cannot locate it any...
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    1994 48spl tilt

    Hi I have a 48 special on my boat it only has the air hydraulic assist cylinder to get it up and down. Can I fit a trim and tilt unit from the same year/engine group to this motor? will it bolt up OK? Thanks.
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    re-actionary paint 1993 evinrude 6hp

    Hi, I just painstakingly torn down and repainted a small Evinrude 6hp. I used BRP touch up paint P/N 777174 The motor look nice. I want to clear-coat it. I'm scared of paint re-action. I have 3 test plates i made and the first one bubble up using acrylic lacquer. What should I try next clear...
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    1958 evinrude 3hp pull start

    Hi, I have a little 3hp evinrude that I have had to constantly replace the pull cord. It breaks the knot off at the base of the starter after about 10 pulls. The end of the nylon is just cut. Is the a special way to rig the cord so it won't cut the knot off? I've tried 3 different types of...
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    not even a pop on 1973 mercury 4hp

    Hi, tried to get even a pop out of this motor, no go. has nice hot blue spark, but even pulling the plug and squirting a jet of premix in nothing. Help!!!
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    spark check 1972 4hp 1 cyl

    Hi what is the best way to check spark on this little motor. The starter is integral with the upper cowl which covers the whole motor including plug and lead.there doesn't appear to be any where on the fly wheel to wind a rope? Thanks
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    1973 4hp steering

    Hi, I picked up a 4hp serial number 3533361 it is in very good shape everything appears functional except the tiller steering is frozen. I've sprayed penetrating oil on the joints, but it's stuck solid. I don't want to use too much brute force, but what can I do? any help would be very much...
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    merc 60 6hp 1963 stuck impeller

    I have a little 6hp serial number 1552065 IT QUIT PUMPING WATER AND THE IMPELLER ID FROZEN ON TO THE DRIVE SHAFT. any suggestions on removal. it will rotate about a 1/4 turn but will not slide up the drive shaft. I have a new impeller and drive pin coming, but I want get the old one off. I...
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    1987 4hp johnson cj4rcud no tel tale

    Hi just got this little motor and just cleaned the carb and now it purrs like a kitten. The motor has no tell tale that I can see. I ran it at idle in gear for 30 minutes in the barrel and it was just barely warm to the touch, so I know it's getting cooled. Is the reason it has no tell tale...
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    Briggs and Stratton 5hp outboard won't run

    Hi, this motor has got me red in the face. mainly from pulling on it. After fixing the last problem, I thought I'd clean it up and change the spark plug and now it won't run. It try to run but won't catch enough rpm to take off. It's got spark and gas, Ive check the ground, the stop switch, and...
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    Briggs and Stratton 5hp outboard

    Hi, I just picked up a aa0101-0005 Briggs outboard for next to nothing. The guy sold it to me cheap because the power head was locked up. I took it home and pulled the plug and pumped out about 3 ounces of oil. I put the plug back in, checked the oil and started it up. I smoked like the devil...
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